【Android开发日记】Popupwindow 完美demo

Popupwindow 完美demo实现

图示：

关键代码说明：

1.弹出popupwindow，背景变暗

ColorDrawable cd = new ColorDrawable(0x000000);
popuWindow1.setBackgroundDrawable(cd);
WindowManager.LayoutParams lp=getWindow().getAttributes();
lp.alpha = 0.4f;
getWindow().setAttributes(lp);

2.popupwindow消失之后，背景恢复

public void onDismiss(){
    WindowManager.LayoutParams lp=getWindow().getAttributes();
    lp.alpha = 1f;
    getWindow().setAttributes(lp);
}

3.popupwindow圆角矩形

rounded_corners_bg.xml

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android">
  <solid android:color="#FFFFFF" />
  <corners
    android:topLeftRadius="5dp"
    android:topRightRadius="5dp"
    android:bottomRightRadius="5dp"
    android:bottomLeftRadius="5dp"/>
</shape>

pupopwindow布局文件中设置背景

<?xml version="1.0" encoding="UTF-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
  android:layout_width="wrap_content"
  android:layout_height="wrap_content"
  android:layout_gravity="center"
  android:background="@drawable/rounded_corners_bg"
  android:orientation="vertical" >
   ...
   ...
   ...
 </RelativeLayout >

4.点击popupwindow外部，popupwindow也会dismiss

popuWindow1.setOutsideTouchable(true);
popuWindow1.setFocusable(true);

完整代码：

1.MainActivity.java

package com.popupwindowdemo;

import android.app.Activity;
import android.content.Intent;
import android.graphics.drawable.ColorDrawable;
import android.net.Uri;
import android.os.Bundle;
import android.view.Gravity;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.view.WindowManager;
import android.widget.Button;
import android.widget.PopupWindow;
import android.widget.TextView;
import android.widget.PopupWindow.OnDismissListener;

public class MainActivity extends Activity {

  //popupwindow
  private PopupWindow popuWindow1;
  private View contentView1;
  private TextView textview1;
  private Button btn1;

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    textview1 = (TextView)findViewById(R.id.textView2);
    btn1 = (Button)findViewById(R.id.button1);
    btn1.setOnClickListener(new View.OnClickListener() {
      public void onClick(View v) {
        initPopuWindow1(v);
      }
    });

    textview1.setOnClickListener(new View.OnClickListener() {
      public void onClick(View v) {
        final Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse("http://blog.csdn.net/geeklei/article/"));
        startActivity(intent);
      }
    });
  }

  private void initPopuWindow1(View parent) {
     	if (popuWindow1 == null) {
     		LayoutInflater mLayoutInflater = LayoutInflater.from(this);
        contentView1 = mLayoutInflater.inflate(R.layout.popuwindow1, null);
        popuWindow1 = new PopupWindow(contentView1,ViewGroup.LayoutParams.WRAP_CONTENT,
            ViewGroup.LayoutParams.WRAP_CONTENT);
     	}

     	ColorDrawable cd = new ColorDrawable(0x000000);
     	popuWindow1.setBackgroundDrawable(cd);
     	//产生背景变暗效果
    WindowManager.LayoutParams lp=getWindow().getAttributes();
    lp.alpha = 0.4f;
    getWindow().setAttributes(lp);

     	popuWindow1.setOutsideTouchable(true);
     	popuWindow1.setFocusable(true);
     	popuWindow1.showAtLocation((View)parent.getParent(), Gravity.CENTER|Gravity.CENTER_HORIZONTAL, 0, 0);

    popuWindow1.update();
    popuWindow1.setOnDismissListener(new OnDismissListener(){

    //在dismiss中恢复透明度
    public void onDismiss(){
        WindowManager.LayoutParams lp=getWindow().getAttributes();
        lp.alpha = 1f;
        getWindow().setAttributes(lp);
      }
     });
  }  

}

2.activity_main.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
  xmlns:tools="http://schemas.android.com/tools"
  android:layout_width="match_parent"
  android:layout_height="match_parent"
  android:paddingBottom="@dimen/activity_vertical_margin"
  android:paddingLeft="@dimen/activity_horizontal_margin"
  android:paddingRight="@dimen/activity_horizontal_margin"
  android:paddingTop="@dimen/activity_vertical_margin"
  tools:context="com.popupwindowdemo.MainActivity" >

  <TextView
    android:id="@+id/textView1"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="@string/hello_world" />

  <TextView
    android:id="@+id/textView2"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignLeft="@+id/textView1"
    android:layout_below="@+id/textView1"
    android:layout_marginTop="23dp"
    android:text="click to visit my csdn blog"
    android:textColor="#1C86EE" />

  <Button
    android:id="@+id/button1"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_below="@+id/textView2"
    android:layout_centerHorizontal="true"
    android:layout_marginTop="103dp"
    android:text="click to show popupwindow" />

</RelativeLayout>

3.popupwindow1.xml

<?xml version="1.0" encoding="UTF-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
  android:layout_width="wrap_content"
  android:layout_height="wrap_content"
  android:layout_gravity="center"
  android:background="@drawable/rounded_corners_bg"

  android:orientation="vertical" >

  <LinearLayout
    android:layout_width="220dp"
    android:layout_height="wrap_content"
    android:layout_centerInParent="true"
    android:layout_gravity="center_vertical|center"
    android:orientation="vertical" >

      <TextView
        android:id="@+id/group_menu1_passfile"
        android:layout_width="fill_parent"
        android:layout_height="40dp"
        android:layout_marginLeft="20dp"
        android:gravity="center_vertical"
        android:text="item1"
        android:textColor="#000000"
        android:textSize="13sp" />

      <View
        android:layout_width="match_parent"
        android:layout_height="0.5dp"
        android:background="#999999" />
      <TextView
        android:id="@+id/group_menu1_playgame"
        android:layout_width="fill_parent"
        android:layout_height="40dp"
         android:layout_marginLeft="20dp"
        android:gravity="center_vertical"
        android:text="item2"
        android:textColor="#000000"
        android:textSize="13sp" />
      <View
        android:layout_width="match_parent"
        android:layout_height="0.5dp"
        android:background="#999999" />

      <TextView
        android:id="@+id/group_menu1_removefriend"
        android:layout_width="fill_parent"
        android:layout_height="40dp"
        android:layout_marginLeft="20dp"
        android:gravity="center_vertical"
        android:text="item3"
        android:textColor="#000000"
        android:textSize="13sp" />

      <View
        android:layout_width="match_parent"
        android:layout_height="0.5dp"
        android:background="#999999" />

      <TextView
        android:id="@+id/group_menu1_setremark"
        android:layout_width="fill_parent"
        android:layout_height="40dp"
        android:layout_marginLeft="20dp"
        android:gravity="center_vertical"
        android:text="item4"
        android:textColor="#000000"
        android:textSize="13sp" />

      <View
        android:layout_width="match_parent"
        android:layout_height="0.5dp"
        android:background="#999999" />

      <TextView
        android:id="@+id/group_menu1_brokemate"
        android:layout_width="fill_parent"
        android:layout_height="40dp"
        android:layout_marginLeft="20dp"
        android:gravity="center_vertical"
        android:text="item5"
        android:textColor="#000000"
        android:textSize="13sp" />

  </LinearLayout>
</RelativeLayout>

4.rounded_corners_bg.xml

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android">
  <solid android:color="#FFFFFF" />
  <corners
    android:topLeftRadius="5dp"
    android:topRightRadius="5dp"
    android:bottomRightRadius="5dp"
    android:bottomLeftRadius="5dp"/>
</shape>

demo下载地址：

http://download.csdn.net/detail/geeklei/7991521